KWA warranty

I'm not really sure where to put this, but because its for my glock, I'll put it here. A couple years ago I traded a busted AGM L96 for a kjw glock. both guns were broken so I thought it was a fair trade. The only thing I didnt know was this gun was missing a pin. Over the months I spent building replacement parts I found out that either more parts were missing, or I lost some during my bootleg repairs. Anyway, I was told that KJW has a full repair warranty for 50 bucks.

What I need to know is, what is the extent of repairs that they will make, and do I have to be the original owner to get the service?
Any help is appreciated.
-Brandon